1. School bought 10 cases of chalk, a box of 60 boxes, an average of 12 classes, each class points how many boxes 2. There is a packet of candy, no matter it is divided to two or five people, there is exactly one piece left. If it is divided to three people on average, it is just finished. How many pieces of candy is there in this packet at least? 3. There is a 30 meter long rope. From one end, make a mark every 2 meters, and make a mark every 3 meters. Then cut it along the place marked with a common mark. How many sections has the rope been cut into?

1. School bought 10 cases of chalk, a box of 60 boxes, an average of 12 classes, each class points how many boxes 2. There is a packet of candy, no matter it is divided to two or five people, there is exactly one piece left. If it is divided to three people on average, it is just finished. How many pieces of candy is there in this packet at least? 3. There is a 30 meter long rope. From one end, make a mark every 2 meters, and make a mark every 3 meters. Then cut it along the place marked with a common mark. How many sections has the rope been cut into?

In this case, according to the third sentence, the number must be an integral multiple of 3, so the minimum is 21 & nbsp; 3.30 △ 2 + 1 + 30 △ 3 + 1 -- 6 = 15 + 1 + 10 + 1-6 = 27-6 = 21 (number) 21-1